PROBLEM TO BE SOLVED: To provide a motor controller capable of preventing control from being limited by a failure of a thermistor in the motor controller in which the thermistor is mounted on each of a substrate on which switching elements are mounted, and a substrate on which an electronic component for generating a control signal to the switching element is mounted, and an electrically-driven power steering device.SOLUTION: In a controller 4, a control part 42 configured to generate a control signal to switching elements 411-414 comprises: first temperature estimation means for estimating a temperature of a metal substrate 43 based on a temperature detected by a second thermistor 46 and an integration value of a drive current when a failure in a first thermistor 45 mounted on the metal substrate 43 is detected; and second temperature estimation means for estimating a temperature of a printed circuit board 44 based on a temperature detected by the first thermistor 45 and an integration value of a drive current when a failure of the second thermistor 46 mounted on the printed circuit board 44 is detected.SELECTED DRAWING: Figure 3

    【課題】スイッチング素子が搭載された基板、及びスイッチング素子への制御信号を生成する電子部品が搭載された基板のそれぞれにサーミスタが搭載されたモータ制御装置において、サーミスタの故障によって制御に制約が生じることを抑制することが可能なモータ制御装置、及び電動パワーステアリング装置を提供する。【解決手段】コントローラ4は、スイッチング素子411〜414への制御信号を生成する制御部42が、金属基板43に搭載された第1のサーミスタ45の故障が検知されたとき、第2のサーミスタ46によって検出された温度、及び駆動電流の積算値に基づいて金属基板43の温度を推定する第1の温度推定手段と、プリント基板44に搭載された第2のサーミスタ46の故障が検知されたとき、第1のサーミスタ45によって検出された温度、及び駆動電流の積算値に基づいてプリント基板44の温度を推定する第2の温度推定手段と、を有する。【選択図】図3


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    Title :

    MOTOR CONTROLLER AND ELECTRICALLY-DRIVEN POWER STEERING DEVICE


    Additional title:

    モータ制御装置及び電動パワーステアリング装置


    Contributors:

    Publication date :

    2018-01-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B62D MOTOR VEHICLES , Motorfahrzeuge



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